In California, an unvaccinated teacher took a mask at the lessons, as a result of which he infected with coronavirus half a class. In the future, this led to a surge in the incidence of coronavirus at school. This is reported by Voice of America with reference to the study of the United States Center for Disease Control.
Experts of the department carefully studied the reasons for a surge of incidence of coronavirus in one of the schools of California – just during the distribution of the Delta strain.
It is noted that in one of the classes the level of infections was 50%, and the risk depended on how close the children were sitting to the teacher. Eight out of ten students have become infected in the first two rows.
In connection with this, the CDC reminded that vaccines are effectively protecting from the Delta strain, but the risk of coronavirus transmission among unseasoned persons is raised.